Overtravel Pressure Relief For A Gas Spring
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United States of America Patent
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Issued Date -
Mar 19, 2015
app pub date -
Sep 11, 2014
filing date -
Sep 19, 2013
priority date (Note) -
Abandoned
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Abstract
A gas spring for forming equipment. A casing includes an axially extending side wall, an open end, a transversely extending closed end wall axially spaced from the open end, a pressure chamber established in part by the side and end walls to receive a gas under pressure. A piston rod is received at least in part in the casing for reciprocation between extended and retracted positions. A piston rod housing is received at least in part in the casing between the piston rod and the casing. An overtravel pressure relief feature may be carried in a vent passage through the casing and/or in the piston rod housing.
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